Exhibit 99
Joint Filer Information
Each of the following joint filers has designated Marathon Asset Management, L.P. as the “Designated Filer” for purposes of the attached Form 3:
| 1. | Marathon Asset Management GP, L.L.C. |
One Bryant Park, 38th Floor
New York, NY 10036
| 2. | Marathon Distressed Credit Master Fund |
One Bryant Park, 38th Floor
New York, NY 10036
| 3. | MCSP Sub LLC |
One Bryant Park, 38th Floor
New York, NY 10036
| 4. | Marathon StepStone Master Fund LP |
One Bryant Park, 38th Floor
New York, NY 10036
| 5. | Bruce Richards |
One Bryant Park, 38th Floor
New York, NY 10036
| 6. | Louis Hanover |
One Bryant Park, 38th Floor
New York, NY 10036
Date of Event Requiring Statement: June 15, 2023
Issuer Name and Ticker or Trading Symbol: ATI PHYSICAL THERAPY, INC. [ ATIP ]
| Marathon Asset Management, L.P., by: /s/ Jamie Raboy, Authorized Signatory | 6/26/2023 |
| Marathon Asset Management, GP, L.L.C., by: /s/ Jamie Raboy, Authorized Signatory | 6/26/2023 |
| Marathon Distressed Credit Master Fund, by: /s/ Marathon Asset Management L.P., solely in its capacity as Investment Manager, by Jamie Raboy, Authorized Signatory | 6/26/2023 |
| MCSP Sub LLC., by: /s/ Marathon Asset Management L.P., solely in its capacity as Investment Manager, by Jamie Raboy, Authorized Signatory | 6/26/2023 |
| Marathon StepStone Master Fund LP, by: /s/ Marathon Asset Management L.P., solely in its capacity as Investment Manager, by Jamie Raboy, Authorized Signatory | 6/26/2023 |
| /s/ Bruce Richards | 6/26/2023 |
| /s/ Louis Hanover | 6/26/2023 |
Date: June 26, 2023